"The goalkeeper saves, he goes there, boom, goal. The cross is coming, he anticipates the first-post header, goal."

Chicharito Mexico

Only Zlatan Ibrahimovic has hit for double digits for Unitedin the Premier League this term, something that Mourinho said Hernandez could have matched had he not been sold to Bayer Leverkusen for£7.3 million in 2015.

"I think Zlatan's number of goals [27] is a number for every striker," he said.

"I think all the others, and I am not just speaking about the strikers, I am speaking about the attacking players with freedom, they have to reach always reach a certain number of goals which, when added between them, means a lot of victories, a lot of points, but no-one has reached that level."

Hernandez has scored 27 goals in 51 league appearances for Leverkusen.